04-18-2018, 02:57 AM
Alain, here is the front sprocket from Sunstar.
http://sprocketcenter.com/street-sprocke...ocket.html
I was out on the freeway yesterday and found that I am now, with 42 tooth rear sprocket, turning 3500 rpm at 70 mph in 6th. 65, my crusing speed, was at 3200 rpm. Works for me!
Using the chart provided by PD, it is pretty close at 3401 for a 70 mph speed. With the 42 tooth.
http://sprocketcenter.com/street-sprocke...ocket.html
I was out on the freeway yesterday and found that I am now, with 42 tooth rear sprocket, turning 3500 rpm at 70 mph in 6th. 65, my crusing speed, was at 3200 rpm. Works for me!
Using the chart provided by PD, it is pretty close at 3401 for a 70 mph speed. With the 42 tooth.
